Study of plasma-assisted detonation initiation by quasi-direct current discharge

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Siyin Zhou, T. Shi, W. Nie
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引用次数: 4

Abstract

To study the effects of quasi-direct current discharge plasma on the initiation of a pulse detonation engine at multiple locations, we proposed a double-zones quasi-direct current discharge plasma ignition scheme. Based on the establishment of the plasma-assisted detonation initiation model, the process of detonation wave formation in the mixture of hydrogen and air by single and double ignition zone were studied by numerical method. The wave structure, component evolution history, and Zeldovich–von Neumann–Döring curve after forming a stable detonation wave were all discussed. The simulation results indicate that due to its higher total ignition energy and the synchronous propagation of multiple compression waves, double-zone plasma ignition has a 17.9% shorter deflagration to detonation transition time and 14.2% lower detonation distance compared to the single-zone scheme. The double-zone scheme does not modify the peak flow field temperature and pressure when the stable detonation wave is formed, resulting in smoother pressure and temperature increases.
准直流放电等离子体辅助起爆研究
为了研究准直流放电等离子体对脉冲爆震发动机多位置起爆的影响,提出了一种双区准直流放电等离子体点火方案。在建立等离子体辅助爆轰起爆模型的基础上,采用数值方法研究了氢空气混合气中单、双点火区爆轰波的形成过程。讨论了稳定爆震波形成后的波结构、成分演化历史以及zelovich - von Neumann-Döring曲线。仿真结果表明,双区等离子体点火由于具有较高的点火总能量和多个压缩波的同步传播,比单区方案的爆燃-爆轰过渡时间缩短了17.9%,爆轰距离缩短了14.2%。双区方案不改变稳定爆震波形成时的峰值流场温度和压力,使得压力和温度的升高更加平稳。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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